Installation Guide
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Note: Use the Windows NT
Diagnostics window to locate an
available IRQ and I/O space.
Make note of the COM Port that
you use to install the network
card driver. You must enter the
same COM Port when installing
the modem driver.
6. Use the drop-down menus to select an I/O Port, Interrupt,
Memory, and COM Port, noting that the AirCard requires
1 IRQ and 40 bytes of I/O Space. Click Continue.
7. Select the Obtain an IP address from a DHCP Server radio
button and click the Close button.
8. Click Yes to confirm that you want to use DHCP.
9. Click No if prompted to restart your PC. (You will restart
the computer later in this process.)
On completion of this step, the network card driver is installed
and you can proceed to install the modem driver. Follow the
instructions in the next section.
Installing the modem driver
1. You must have the AirCard installation CD in the CD
drive. If the CD startup menu is displayed, use the exit
option in the lower left corner of the screen to exit the
menu.
2. In the Control Panel, double click the Modem icon to open
the Modem Properties window.
3. Click the Add button to open the Install New Modem wizard.
4. Select Don’t detect my modem, I will select it from a list and click
Next.
5. Select the Have Disk button.
6. Enter d:\Drivers\WinNT\mdmac555 where d is the drive letter
for your CD-ROM drive and click Open.
7. Click OK.
8. Verif y th at Sierra Wireless AirCard 555 Modem is displayed
and click Next.
9. Select the Selected Ports radio button and select the same
communications port you selected when you installed the
network card driver. Click Next.
10. Click Finish.
11. If you are prompted that Dial-Up Networking needs to be
configured, click Yes.
12. Click Add in the Remote Access Setup window.
13. Select the AirCard 555 listing under RAS Capable Devices
and click OK.
14. If you are prompted to restart your PC, click Yes.
Otherwise restart your PC from the Start menu.
15. When the PC restarts, reinstall your Service Pack.